Tube frame for looms



Dec. 6, 1927.

G. CROSSLAND TUBE FRAME FOR LOOMS Filed April 5, 1925 car patented Dec.6, 1927.

zunirso is'r'rss PATENT iiorir czs.

GEORGE CROSSLAND, hr .erusrnrsn new roan, Assreuoa so 'ivronaviiroaiirnrMILLS, rim,- or aarsrnsnair, new roan,- a OORPORATIGN orfn'nw voax.

TUBE FRAME FOR LOOMS.

Application-filed April; 3, 1925. "Serial No. 20,533.

-This invention relates to looms for weavi'ng tufted fabrics such as,for example, AX-

minster rugs, and relates more particularly toan improved form of tubeframes to be used in su ch looms. Ordinarily an AX- minster tube frameis provided with means for holding a spool of tufting yarinfrom whichspool yarn is supplied to the tubes mounted on-theframe. The tubeiframewhich is the subject of this invention, is de signed for use with anoveltype of loom in Which the spools of tufting yarn are ro-- tatablymounted on the stationary loom frame, instead of being 'mounted directlyon the-movable tube frames. "junction with which the tube framedescribed herein is adapted to beused, is fully de scribed" andclaimedin my co-pending ap plicationSeri'al No. 20,534 filed concurrentlyherewith. I

It is-anobject of this invention to provide a 'tube frame of novelconstruction adapted to be used with-asupply of yarn which is -mountedindependently of the tube frame itself.

It is a further objectof thisinvention to provide means for clamping theyarnto prevent it from being pulled out of the tubes during movementofthe tube frame toward or from theshed,-said clamping means beingreleasabledurmg a portion of the move ment of the tube frame from theshed. to permit the tube frame to move relatively to the yarn.

-Other=6bjects andadr'antages of'my inventionwvill'be apparent from thefollowing description, taken inconjunction with the socompanyingdrawings, which form a part of this specificatioii,-ai1d inwhich:

Figure 1 is a front-elevation of a tube frame constructed according tomyinvention. the sheet metal guard being shown in dot and dash lines;

Figure 2 is'a CIOSS-SGCtlODtl view of the 'samet-aken onthe line 22 ofFigure 1; and

Fip 'ure 3 is a similar view-taken on the line 3-3 of- Figure 1.

Referring more pa rticula rly to the drawings, in vvhi'chlikereferencecharacters "denote like parts throughout the several VlGWS'-'thereof,1ny improved tube frame comprises a body-or'b'ar 10, which ispreferably a, hollow bar of rectangular cross-section, upon Which aremounted tubes 11. The bar is provided With'en'd brackets 12, in a recessA loomin conin the back of each of which is riveted the post ofastandard earassembly, havingan car 13 and asprin'g hooltlet. Thebrackets 12' also carry between them a rotatable shaft 15 and aiiiredshaft 16. 'Braces17 are mounted on these two shafts and serve i to holdthe tubes 11 against vibration. Only one such brace 17 is shown "in thedrawings but itis to be understood, of course, that as many desired maybe'supplied.

Yarn clamps 18 are mounted above the tubes 11 and serve to prevent theyarn from being pulled out of the tubes. This. clamp is in the form of abar extending longitudinal'ly of the tube frame immediatelyebove thetubes, and is madeinseveralsections, as

shown, in order that an even bearing surface on the yarn-may be securedthroughout the full length ofthe tube frame. "The bars or clamps 18 arecarried at each end upon arms 19 rotatablymounted upon the fixed shaft16. Collars 2O fixedly mounted upon the shaft 16 hold one end ofa'spring 21, the other end of which-bears upon the arm 19 in such manneras to hold the clamp 18 firmly against the yarn. The rotatable shaft 15is provided with arms ordogs 22, fixedly secured thereto,- one of whichengages each arm '19. AQfinger -or trigger 23 is also secured to eachend of the rotatable shaft 15 and is adapted-to be engaged by suitable"mechanism on the l-oointo rotate the shaft 15-at proper time-s. Uponsuch inovement'of the shaft 15 the'dog's 22 will force the arms 19outwardly against the action of the struck up from eachend ofth e sheetmetal guard 25, and is providedwitha hole for the attachment of a chain,the purpose of which is to operate the tensioning mechanism brieflyreferredto below, and'fiilly described in my above-named co-pendingapplication.

The manner ofuse of my improved-"tube" "ill frame is explained at lengthin my co-pend ing application above referred to, and it is consideredunnecessary to repeat this matter here. It is sufficient here to .statemerely that .the tube frame is carried on a chain by means of the ears13 and spring hooks 14iin-a manner well known in the prior art. Theyarn, however, instead of being drawn from a spool mounted directly onthe tube frame, is drawn from a spool mounted on a'stationary part ofthe loom, or on an independent frame or creel. The tube frame is seizedby the usual clutches or transfer arms, removed from the carrying chain,and

presented at the fell the fabric. The

clamps 18 prevent the yarn from being pulled out of the tubes, and serveto hold the yarn so that some is drawn from the supply beam while thetubeframe is moving downward. The tuft is then made and bound in placein the usual manner,'and before shearing takes place, the triggers 23are operated by mechanism on the loom to release the clamps 18 for aportion of the upward movement of the tube frame sufficient to leaveyarn ends of the proper length projecting beyond the tubes. The-yarn isthen cut by the knives on the loom, and the tube frame replaced on thecarrying chain by the transfer arms. Suitable tensioning mechanism onthe loom is employed to take up the slack in the yarn caused by theupward movement of the tube frame after the clamps 18 re-engage theyarn. The carrying chain is then moved, and the operation repeated withthe next tube frame in the sequence.

Experience has shown that a single clamp 18, extending across the entiretube frame, is impractical Where a wide tube frame is used, because itwill clamp part of the yarn and leave other parts unclamped. The reasonfor this is probably that the tube frames do not present a perfectlyuniform plane surface against which clamping may be effected. Aplurality of clamps 18 is there fore provided, each of which actsindependently in clamping the yarn, but which are all actuatedsubstantially simultaneously as V a unit in releasing the yarn, whichaction is accomplished by means of the triggers I 23 and dogs 22, allfast to rotatable shaft 15.

,Man i alterations or modifications mi ht be made in the structure abovedisclosed by one skilled in the art without affecting the essentialfeatures of my invention, and such changes are within the intent of theappended claims.

Having thus described the invention, what is claimed as new and desiredto be secured by Letters Patent is:

1; In a tube frame adapted to be supplied with yarn from a sourcemounted independently thereof, a bar having tubes secured thereto, aplurality of yarn ends extending clamping means in engagement with theyarn.

2. In a tube frame adapted to be supplied with yarn from a sourcemounted independently thereof, a bar having tubes secured thereto, aplurality of yarn ends extending thru said tubes, yarn clamping meansturning about a fixed pivot on said tube frame, means for holding saidclamping means in engagement with the yarn, whereby movement of the yarnrelative to the tube frame is prevented, and means for disengaging saidor ampin g means.

3; In a tube frame adapted to be supplied with yarn from a sourcemounted independently thereof, a. bar having tubessecured thereto, aplurality of yarn ends extending thru said tubes, yarn clamping meansturning about a fixed pivot on said tube frame, means for holding saidclamping means in engagement with the yarn,.whereby movement of the yarnrelative to the tube'frame is prevented, and means for disengaging saidclamping means, said disengaging means being constructed and arranged tobe operated by mechanism on the loom.

4t. In a tube frame, in combination, a bar having tubes secured thereto,a springpressed yarn clamp mounted onsaid bar, a rotatable dog fordisengaging said yarn clamp, and means for rotating said dog todisengage said clamp.

.5. In a tube frame, in combination, a bar having tubes secured-thereto,end brackets secured to said bar, a rotatable shaft mounted in saidbrackets, a fixed shaft mounted in said brackets, a yarn clamp mountedon one of said shafts, a dog mounted on the other of said shafts, saiddog being adapted to disengage said clamp upon rotation'of said dog, andmeans for rotating said dog.

6. In a tube frame, in combination, a bar havingtubes secured thereto,end brackets secured to said bar, a fixed shaft mounted in saidbrackets, a rotatable shaft'mounted in said brackets, a yarn clamprotatably mounted on said fixed shaft, a dog fixedly secured to saidrotatable shaft and adapted to disengage said yarn clamp upon rotationof said shaft, and means for rotating said shaft.

7. A tube frame for use with an independent supply of yarn, comprisingin combination, a bar having tubes secured thereto, a plurality of yarnclamps along said bar, spring-pressed means for independentlyopcratingsaid clamps in the clamping direction, and means cooperating with a parton the loom for simultaneously releasing all of said clamps.

8. In a tube frame adapted to be supplied with yarn from a sourcemounted independently thereof, a plurality of yarn ends extendingthrough said tubes, clamping means operated independently of said yarnends mounted on said tube frame for preventing movement of the yarn endsrelative thereto, and means for normally holding said clamping means inengagement with the yarn.

9. In a tube frame adapted to be supplied With yarn from a sourcemounted independently thereof, a plurality of yarn ends extendingthrough said tubes, clamping means independent of said yarn ends mountedon said tube frame for preventing movement of the yarn ends relativethereto, means for normally holding said clamping means inengagement'vvith the yarn, and means for moving said yarn clamping meansout of contact With the yarn.

10. In a tube frame, in combination, a bar having tubes secured thereto,said bar having a surface parallel to said tubes and yarn clamping meanscarried by said frame having a portion for normally engaging the yarnupon said surface but having all other portions disposed clear of theyarn.

11. In a tube frame, in combination, a bar having tubes secured thereto,said bar having a surface parallel to said tubes, yarn clamping meanscarried by said frame including a member for normally engaging the yarnupon said surface and means carried by said frame. for disengaging saidyarn clamping means, said member being out of contact with the yarn whenin its disengaged position.

12. In a tube frame, in combination, a bar having tubes secured thereto,said bar having a clamping surface above and parallel to said tubes, ayarn clamp rotatably mounted on said bar havmg a portion for engagingthe tive to said surface.

18. In a tube frame, in combination, a bar having tubes secured thereto,said bar hav mg a clamping surface above and parallel to said tubes, ayarn clamp rotatably mounted on said bar for engaging said surface,resilient means for normallyholdmg sa d clamp against the yarn toprevent movement of the yarn relative to said surface and means associated With and carried by said frame adapted to be positively actuatedfor disengaging said clamp.

14. In a tube frame, in combination, a bar having tubes secured thereto,said bar having a. clamping surface above and parallel to said tubes, ayarn clamp rotatably mounted on said bar for engaging said surface,resilient means for normally holding said clamp against the yarn toprevent movement of the yarn relative to said surface, and meansassociated with and carried by said frame adapted to be positivelyactuated by means on the loom frame for disengaging said clamp.

15. In a tube frame, in combination, a bar having tubes secured thereto,a spring pressed yarn clamp rotatably mounted on said frame forresiliently engaging a sur' face on said frame, an arm mounted on saidframe for disengaging said yarn clamp, and means including a membermounted on said frame for operating said arm.

In testimony whereof I hereunto affix my signature.

GEORGE CROSSLAND.

